Hinge



A ril 14, 1931 J P. M KINNEY, JR

HINGE- Filed Feb. 14, 1928 Patented Apr. 14, 193.1

' entree stares FATENT QFFECE E. IVECKINNEY, JR., F PITTSBURGH, PENNSYLVANIA, ASSIGNOR '10 MCKINNEY MANUFACTURING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A GQRPORATION OF PENNSYLVANIA HINGE Application filed February 14, 1928. Serial No. 254,178.

My invention relates to hinges, and more particularly to pintles therefor for holding the leaves or butts of the hinges in cooperating relation.

One object of my invention" is to provide a hinge of improved form and one wherein the pintle will wear longer and give more effective service than hinge pintles of the prior art.

7 Another object of my invention is to provide a hinge pintle of such form that it will tend to rotate with respect only to one leaf and remain stationary with respect to the other leaf of a hinge.

A further object of my invention is to provicle an improved means for lubricating hinge pintles.

Still another object of my invention is to simplify and improve generally the structure and operation of hinges.

Some of the forms which my invention may take are shown in the accompanying drawing wherein Figure 1 is a vertical sectional view of one form of hinge; Fig. 2 is a view showing the pintle of the structure of Fig. 1; Fig. 3 is a view on an enlarged scale of a portion of the structure of Fig. 1 and Fig. 4 is a view showing a modification of the device of Fig. 3.

Referring to Fig. 1, I show a hin e leaf or butt 5 having knuckles 6 and 7 formed thereon and a leaf or butt 8 that is provided with knuckles 9, 10 and 11. These parts may be of somewhat the usual form. A pintle 12 extends into the knuckles, 6, 7 9, 10 and 11 to hold the leaves 5 and 8 in as sembled relation in the usual manner. A ball tip 18 tom knuckle 11 to close the lower end thereof and to give a finished appearance to the hinge, while a ball tip 1% extends into the top knuckle to serve as a finishing element and to support the pintle as hereinafter described, and somewhat after the manner set forth in my Patent No. 1,618,544, dated February 22, 1927. The upper end of the pintle 12 is of reduced diameter and extends into a recess 16 in the ball tip 141. The lower portion of the tip 14 serves as a bearing for supporting the pintle 12 against 'tremities liewithin the knuckles 9 and 11.

knuckles of the leaf 8 to the turning of the is screwed or driven into the botradial strains and its lowermost edge is bent in to hold the pintle and the tip in assembled relation.

The pintle 12 is of substantiallyun'iform diameter throughout that portion below its extension 15 and its lower end has direct engagement with the inner wall of the knuckle 11 although a bushing may be provided around the lowerportion of the pintle, if desired. The leaf 5 which is provided with the knuckles 6 and 7 is ordinarily secured directly to a door, while the leaf8 is secured to a door jamb, although if desired, the leaf 8 canbe secured to the door and the leaf 5 to the door frame. event, the points of greatest strain on the pintle will be at those portions lying within the knuckles 6 and 7 and at the upper and lower extremities of the pintle, which'ex- Since the upper end of the" pintle is of reduced diameter and turns within the hearing recesses 16 of the ball tip 14:, there will be less frictional resistance offered by the pintle than in'the case of the knuckles of the leaf 5,50 that the pintle will tend to rotate with the leaf 5, particularly in view of the fact that the binding action of the leaf 5 upon the pintle is greater than in the case of the leaf 8 with its'more widely spaced knuckles. These binding stresses ordinarily causethe cutting or wearing of'grooves in the pintle on those points which come in contact with the knuckles Y 6 and 7, thereby shortening its life,'so that it is important to have the pintle rotatewith those knuckles 6 and 7 which tend to most strongly bind the same. l

The ball tip 14: may be driven into the kunckle 9 so that it will be rigidly held in place with respect thereto and serve to pre vent rising or upward gripping of the pintle The pintle 12 is provided with a spiral groove through which lubricant may flow from the recess 16. to the various knuckles. The recess 16 may be filled with lubricant before it is secured tothepintle, or ahole 17 may be provided through which lubri-F In any ice cant may be introduced into the recess 16 upon partially withdrawing the ball tip 14.

In Fig. 4, I show a ball tip 14a of modified form, provided with a recess 16a for the reception of lubricant, the recess being closed by a crew plug 18 that can be conveniently removed for filling the recess with lubricant. In this structure, the lower end of the ball tip will be turned inwardly to support a pintle 15a as in the other figures.

I claim as my invention r 1. The combination with a hinge leaf having upper and lower knuckles and a hinge leaf having a knuckle disposed between the first-named knuckles, of a pintle having a reduced bearing portion at one end, and a sleeve-like bearing member disposed within one of the first-named knuckles and rotatably supporting the said reduced portion of the pintle, the pintle being of substantially uniformdiameter throughout the remaining portions thereof which have bearing engagement with the other knuckles.

2. The combination with a hinge leaf having upper and lower knuckles and a hinge leaf having a knuckle disposed between the first-named knuckles, of a pintle extending into said knuckles and being of reduced diameter atone end thereof, and a tip extending into one of the first-named knuckles and having a bearing recess for the reduced portion of the pintle, the remainderof the pintle being of substantially uniform diameter and its other end having bearing engagement. with the other one of the firstnamed knuckles.

3. The combination with a hinge leaf hav-' ing upper and lower knuckles and a hinge leaf having a knuckle disposed between the first-named knuckles, of a pintle extending into said knuckles and having a reduced end, means in one. of the first-named knuckles for rotatably supporting the reduced end of the pintle, the other end of the pintle having bearing engagement with the other one of the first-named knuckles, and

a ball tip extending into the last-named knuckle and terminating at a point short 0 the last-named end of the pintle. 4. The combination with a hinge leaf having a knuckle and a second hinge leaf having a knuckle in axial alinement with the firstnamed knuckle, of a pintle extending into rotatably supporting said upper end and having a recess for the reception of lubricant, the said sleeve-like member having an opening in its side through which lubricant may be introduced into said recess when said sleeve is at least partially withdrawn from the knuckle.

6. Hinge structure comprising hinge leaves having axially alined knuckles, a

hand. V 7

JAMES P. MCKINNEY, JR.

bly supporting the said reduced portion of the pintle, the pintle being of substantially uniform diameter throughout its remaining portion.

5. The combination with hinge leaves having co-operatingknuckles, of a pintle extending into said knuckles and having a reduced upper end, and a sleeve-like member 

